tools/testing/selftests/rcutorture/bin/config_override.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0+
   3 #
   4 # config_override.sh base override
   5 #
   6 # Combines base and override, removing any Kconfig options from base
   7 # that conflict with any in override, concatenating what remains and
   8 # sending the result to standard output.
   9 #
  10 # Copyright (C) IBM Corporation, 2017
  11 #
  12 # Authors: Paul E. McKenney <paulmck@linux.ibm.com>
  13
  14 base=$1
  15 if test -r $base
  16 then
  17         :
  18 else
  19         echo Base file $base unreadable!!!
  20         exit 1
  21 fi
  22
  23 override=$2
  24 if test -r $override
  25 then
  26         :
  27 else
  28         echo Override file $override unreadable!!!
  29         exit 1
  30 fi
  31
  32 T=${TMPDIR-/tmp}/config_override.sh.$$
  33 trap 'rm -rf $T' 0
  34 mkdir $T
  35
  36 sed < $override -e 's/^/grep -v "/' -e 's/=.*$/="/' |
  37         awk '
  38         {
  39                 if (last)
  40                         print last " |";
  41                 last = $0;
  42         }
  43         END {
  44                 if (last)
  45                         print last;
  46         }' > $T/script
  47 sh $T/script < $base
  48 cat $override